Beginning to have to deal with this myself.
I cannot disagree with these guy because they are right.
You are right, too. Washington will not let you get away with much. All of our walk-ins will need to be replaced because of their walls. Fire code is strict. All walls (as is my understanding) have to have a stamp on them telling that they are approved. Apparently, just having one approval stamp on one wall of the walk-in package you purchase isn't enough. Definately check with not just the city but the fire department as well.
You're in Washington? The heat that a condeser on top of the refrigeration unit may not be detrimental. On the contrary, it may make it more convenient to proof dough. But do consider the heat of the summer.
If you were just asking about sandwich prep or under counter units, then i may be able to help...
We just bought five prep units in August (because of Washington state's new refrigeration rules... urg). I could write pages of compaining, but i won't.
I did a bit of research before purchasing units; this is what i found.
1.) "True" seems to be the 'universal' brand that major purveyors carry.
2.) Purveyors seem to have their 'own' brand that they want you to buy (usually cheaper).
3.) Everyone wants your money.
My purveyor pushed 'CONTINENTAL'. i went with that brand.
problems: one of the units went down, called them, they fixed it (our fault)
same unit went down later (less than 2 months), called support, the guy on the other line had me running aroud trying to tell me that it was MY fault: electrician said 'no', it's the unit's fault...
i was LIVID about the fact that we had just spent $25 grand or so on his products and he was trying to put it on me/ wasn't taking the responsibility for the unit's faults...
I had to hand it off to the GM; i was BEYOND pissed.
we'll never use them again, but they seem to be pretty solid units.
To the point, i trust 'True'. Used? You'll pay half as much. Maybe spend money to fix it after a time, depends on the unit and its use.
Next time, i'll go with 'true' units.
If your looking for some info, i've found this site a good way place to start:
Best in Class 2006: Head of the Class
sorry for the rant.